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Mrittika Bhaumik 9 years ago

Here is 15 dots. If you select 3 dots randomly, what is the probability that 3 dots make a triangle?
a. 440/455.
b. 434/455.
c. 449/455.
d. 438/455.

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Mrittika Bhaumik 10 years ago

Log864-log644096=?

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velmala gangadhar 10 years ago

log a-log b=log a/b
log (864/644096)=-2.872

Like? Yes | No (1)

Hemant Kumar 10 years ago

log 64 base8 - log4096 base64 = log 8^8 base 8 -log 64^64 base 64
as we know that log n^m=mlogn so we ge
=8log 8 base 8 - 64log 64 base 64 because log a base a=1
=8*1-64*1=8-64
ANS=56
is it right answer ??

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Mrittika Bhaumik 10 years ago

Total number of prime factor (402)^7 is what?

Reply Like? Yes (24) | No

Karishma Agarwal 10 years ago

ans is 3
(402)^7=(2*3*67)^7
there are only three prime factors i.e. 2 ,3,67.

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velmala gangadhar 10 years ago

21......i.e 402=2*3*67

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Mrittika Bhaumik 10 years ago

Log3 27+log3 12-log3 4=x.the value of x=?

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Avijit Das 10 years ago

Log3 27+log3 12-log3 4=x
or,x=log3 (27*12)/4
or, x=log3 (81)
or, x=log3(3^4)
or , x=4log3(3)
or, x=4*1
or, x=4

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Mrittika Bhaumik 10 years ago

log root 3*a=6,what is the value of a=?

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Sanjeeb Chatterjee 10 years ago

logroot3^(1/2)a=6
or log root3a=12
or e^12=3a
or a=e^12/3
now put value of e and solve otherwise keep it as answer

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vishal varma 10 years ago

here as v know if loga=x that implies a=e^x similarly here sqrt of 3 and a product is equal to 6 that implies a=e^6/sqrt3

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Ankit 10 years ago

answer is so easy a=2 :P :D :D

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velmala gangadhar 10 years ago

√3a=10^6......then 3a=10^3.....a=(10^3)/3..

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